Oxymorons

An oxymoron (plurals: oxymorons and oxymora) is a figure of speech that juxtaposes concepts with opposite meanings within a word or in a phrase that is a self-contradiction. Examples would be "bittersweet" or "cruel kindness". As a rhetorical device, an oxymoron illustrates a point to communicate and reveal a paradox. A general meaning of "contradiction in terms" is recorded by the 1902 edition of the Oxford English Dictionary.

Latin phrase

figure of speech reversing a natural or rational order